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Eine ganze rationale homogene Funktion f der drei Veranderlichen x, y, z, deren Ordnung n eine gerade Zahl ist und deren N = 1/2 (n + 1) (n +2) Koeffizienten reelle Zahlen sind, moge eine ternare definite Form genannt werden, wenn dieselbe fur reelle Werte der Veranderlichen x, y, z stets positiv ausfallt oder den Wert 0 annimmt. Gibt es reelle von x = y = z = 0 verschiedene Wertsysteme der Veranderlichen, fur welche die definite Form f den Wert 0 annimmt, so ist, wie man leicht zeigt, die Diskriminante der Form f notwendig gleich 0.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 29 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 1% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
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